Changed Fuel Pump..still won't turn on
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Junior Member
Joined: Jun 2014
Posts: 6
Likes: 0
From: Chino CA
Car: 1987 Chevy Camaro IROCZ28
Engine: 305 TPI
Transmission: t5
Changed Fuel Pump..still won't turn on
After testing fuel pressure on my 87 5.0 tpi(was 15-20 psi) I decided i needed to change the fuel pump in which I did and now psi is at 40-45 psi when I crank it which is better but it still won't turn on.. I also checked fuel pump fuse and changed the relay and still nothing. Also, I don't hear the new fuel pump hum when I turn the key and when I checked for spark on the spark plug wires it is there but kind of weak. Anyone know if that is normal for the fuel pump not to hum or what I should do next
Supreme Member
Joined: Jun 2011
Posts: 2,036
Likes: 5
From: knoxville tn
Car: 86 IROC
Engine: 5.0 TPI
Transmission: 700-R-4
Axle/Gears: 2.73 open
Re: Changed Fuel Pump..still won't turn on
under the rear seat. on the drivers side, there is a ground wire . clean this connection and try again
Joined: Aug 2011
Posts: 661
Likes: 7
From: Texas
Car: 91 Firebird/88 Firebird/91 Formula
Engine: V6 3.1/V8 5.0/V8 5.0
Transmission: 4L60/700R4/4L60
Axle/Gears: 3.23/2.73/2.73
Re: Changed Fuel Pump..still won't turn on
If you have good psi, then your fuel pump is working. Check your spark producing equipment...coil, pickup coil, ICM, dizzy cap and rotor, wires. Ohm your injectors.
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five7kid
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May 24, 2016 01:31 PM